The invention provides a vehicle framework integrated design method and a vehicle framework. The method comprises the following steps that a vehicle is divided into multiple modules according to the physical position where the vehicle is located; submodules corresponding to broadband requirements are designed for the modules at the same physical position according to the broadband requirements ofthe vehicle, and the control principles and the solutions of the multiple submodules are same; each submodule at the same physical position is provided with at least one standard module interface; vehicle harnesses with the standard module interfaces are designed according to the broadband requirements of the vehicle; and a series of integrated design schemes are generated according to the multiple submodules at the different physical positions of the vehicle on the basis of a default strategy, and the feasibility of the different integrated design schemes is verified. The vehicle framework integrated design method is a modularized, standardized and systematized vehicle framework integrated design method, the development cost is effectively reduced, the development period is shortened, theproduct reliability is improved, the calibration and adjustment workload is reduced, and the product development risk is reduced.